magnetosphere

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noun mag·ne·to·sphere \mag-ˈnē-tə-ˌsfir, -ˈne-\

Definition of magnetosphere

: a region of space surrounding a celestial object (such as a planet or star) that is dominated by the object's magnetic field so that charged particles are trapped in it

magnetospheric

play \-ˌnē-tə-ˈsfir-ik, -ˈsfer-\ adjective

See magnetosphere defined for kids

Recent Examples of magnetosphere from the Web

While peering at Jupiter, Juno has learned about the planet’s origins, structure, atmosphere and magnetosphere.

— doyle rice, Detroit Free Press, "Humanity to get closest look ever at Jupiter's Giant Red Spot," 6 July 2017
While peering at Jupiter, Juno has learned about the planet’s origins, structure, atmosphere and magnetosphere.

— doyle rice, Detroit Free Press, "Humanity to get closest look ever at Jupiter's Giant Red Spot," 6 July 2017
While peering at Jupiter, Juno has learned about the planet’s origins, structure, atmosphere and magnetosphere.

— doyle rice, USA TODAY, "Humanity to get closest look ever at Jupiter's Giant Red Spot," 5 July 2017
Also called the Aurora Borealis, the Northern Lights is a natural light display in the northern sky caused by particles of the solar wind interacting with the Earth’s magnetosphere.

— gene sloan, USA TODAY, "Viking Cruises to offer voyages to Arctic to see Northern Lights," 25 June 2017
The new spacecraft is bristling with instruments meant to probe the planet’s magnetosphere, polar regions, composition and interior structure.

— amina khan, latimes.com, "This is Jupiter? Giant planet surprises scientists in Juno’s first flybys," 25 May 2017
For years, extra radiation - which is what caused the satellites and electronics to fail - lay trapped inside Earth's magnetosphere, a region surrounding Earth that defends us from solar flares.

— Fox News, "Cold War nuclear weapons warped Earth's magnetosphere - revealing what the true fallout could be if World War 3 broke out," 22 May 2017
Enceladus lies within the Saturn's magnetic field, and the magnetometer detected a disturbance in the planet's magnetosphere around Enceladus's south pole.

— david grossman, Popular Mechanics, "How NASA Discovered Enceladus Has an Ocean," 17 Feb. 2017
Named after the mythological god Jupiter’s wife, who could see through her husband’s tricks, Juno will peer through the planet’s atmosphere, measure its composition and map its powerful magnetosphere.

— bill andrews, Discover Magazine, "How Juno Met Jupiter," 15 Dec. 2016

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'magnetosphere.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.